Fortress Guardian Anchor (3 - 65 lbs)Fortress Guardian Anchor (3 65 lbs) The Fortress Guardian Anchors are manufactured from the same corrosion resistant, high tensile aluminum magnesium alloy as Fortress, which makes them stronger and lighter than competitive steel anchors. The Guardian Anchor is limited to one, single, 32 degree angle, which will work for most common sea bottoms. The result is a high performance anchor that is engineered for fast setting and strong holding power, and a